[MM3-users] Announce Only List

So if we want to make a list announce only (e.g. only specific folks) can post, I've found I can set the list settings to automatically discard messages from members and non-members. Then I go into the individual permissions on each user to be allowed to post without moderation. This works fine, however it seems cumbersome. My expected solution was to make the announce only members moderators - however it appears being a moderator does not give any special ability to post to the list (nor does it appear to make you a 'member' from the point of mailman when sending messages to the list, since a moderator who is not a subscriber gets treated like a nonmember from the posting permissions perspective). Is this correct?